Sealed jack assembly



Dec. 13, 1955 H, suss AL 2,727,216

SEALED JACK ASSEMBLY Filed July 17, 1952 FIG.4

INVENTORS any fussman BY Ja/cu Jf 2'22 er United States Patent SEALEDJACK ASSEMBLY Harry Sussman, Great Neck, and'Jakub Klinger, Jamaica, Y.,assignors to Telectro Industries Corp., Long Island City, N. Y., acorporation of'New York Application July 17, 1952, Serial No. 299,514

4 Claims. (Cl. 339-94) 7 This invention relates to a waterproof, sealedjack assembly.

Open jack assemblies which may be subject to the collection of moisture,are frequently sources of break down in electrical systems of which thejacks are a component.

Accordingly, an object of this invention is to provide an improved jackassembly which is sealed in a manner to prevent ingress of moisture anddeposition of the same on the contact members.

A further object of this invention is to provide in a jack assembly ofthe character described, a casing for the jack. in combination withsealing means at the plug opening thereof and sealing means at theterminal end thereof.

Other objects of this invention will in part be obvious and in parthereinafter pointed out.

The invention accordingly consists in the elements of construction andarrangement of parts as exemplified in the embodiment hereinafterdescribed and of which the scope of invention is set forth in the claimsfollowing.

Referring to the drawing:

Fig. 1 is a front elevational view of a sealed jack assembly embodyingthe invention;

Fig. 2 is a vertical sectional view with parts removed;

Fig. 3 is a vertical elevational view thereof with the casing in sectionand the assembly rotated about a vertical axis to another position; and

Fig. 4 is a view similar to that of Fig. 3 with the assembly rotated tostill another position and with parts omitted.

Referring in detail to the drawing, sealed jack assembly embodying theinvention. The same comprises a jack of the telephone type, generallydesignated at 11 and a sealing casing therefore, generally designated at12.

The jack 11 is made up of a plurality of contact members, for thepurpose of illustration, being shown as two in number, 13, 14. Member 13extends from a ring portion 15 disposed in alignment with a ring portion16 from which member 14 extends. A third ring 17 is aligned with ringportions 15, 16, insulating rings 18 being disposed to separate theportions from one another. The ring portions and rings are grippedtogether by means of a metal bushing 19 which is upset at one endthereof and has an annular flange or collar 20 in engagement with ringportion 17. The bushing 19 is externally threaded as at 21.

Extending from ring portions 15, 16, 17 are soldering lugs 22, 23, 24,respectively. The contact members 13, 14 have bent up contact portions25, 26, respectively, such contact portions being axially aligned withbushing 19 and angularly related to each other.

The jack 11 has assembled therewith a disc closure member made up of aninner layer 27 of; phenolic resin material and an outer layer 28 ofresilient synthetic plastic material, such as neoprene, silicone rubberor the designates a like, the phenolic resin imparting stiffness to thedisc as a whole. Terminal wires 29 are soldered at one end thereof tothe lugs 22, 23, 24 and pass through openings formed in the closuremember. Eyelets 30 are fixed in the openings of the closure member andsolder 31 is applied to each eyelet to seal the terminal wire passingtherethrough. Thus, the closure member is mounted in suitably spacedrelation to the aligned ring portions and maintained in such position bythe terminal wires 29 which may be of suitable stiffness.

The thus mounted jack 11 is positioned within the casing 12, with thethreaded portion of the bushing 19 projecting through a central opening32 formed in end wall 33 of the casing. A sealing gasket 34 of siliconerubber, neoprene or the like is located on the bushing 19 between theflange 20 thereof and the inner surface of the casing wall 33.

The side Wall of casing 12 is formed with an annular groove orindentation 35 slightly spaced from the outer or open end thereof, toprovide a seat for the periphery of the disc closure. The end of thecasing side Wall is then spun over as at 36 to engage the outer layer 28of the closure. Such spinning operation is designed also to tightlypress the forward end of the jack 11 at flange 20 against the casingWall 33 with gasket 34 compressed therebetween to effectively seal theopening 32 in the casing.

The outer ends of the terminal wires 29 which project through theclosure may be formed with eyes to provide external solderingconnections.

It is understood that the jack may be made up of any selected number ofcontact members with corresponding lugs and terminal wires solderedthereto and brought out through the closure disc, as described.

The casing 12 may be formed of thin metal or other suitable material andprovides protection against the ingress of water, the same being sealedat its forward end by the gasket 34 and at its rear end by the resilientouter layer 28 of the closure disc, such resilient layer being supportedon the stiff inner layer 27 of the disc.

Having thus disclosed our invention, we claim as new and desire toprotect by Letters Patent:

1. A sealed jack assembly comprising a tubular casing having an end wallat one end thereof formed with a central opening and open at the otherend thereof, a jack Within said casing comprising a flanged bushing anda plurality of insulated contact members mounted on one end of saidbushing with contact portions of said members axially aligned with saidbushing, the other end of said bushing projecting through the opening insaid casing end wall, a resilient gasket on said bushing between theflange thereof and the inner surface of said casing end wall, a stiffinsulating closure member at the open end of said casing, stiffenedterminal means extending from each of said contact members through saidclosure member and sealed thereto, the peripheral end portions of saidcasing being in sealed relation to said closure member and pressing saidjack toward the casing end wall to compress said gasket and thereby sealthe opening in said casing end wall.

2. A jack assembly as in claim 1, wherein said closure member comprisesan inner layer of stiff synthetic resin and an outer layer of resilientsynthetic resin.

3. A sealed jack assembly comprising a tubular casing having an end wallat one end thereof formed with a central opening and open at the otherend thereof, a jack Within said casing comprising a bushing having aradial flange intermediate the ends thereof, a plurality of conductivering members mounted on said bushing with interleaving insulatingmembers, a contact member extending from each of said conductive ringmembers with a portion thereof arranged in aligned relation to the axisof said bushing, a stiff closure disc for the open end of said casing,stiff terminal means extending from each of said ring members throughsaid closure disc, means for sealing each terminal means to said disc, aportion of said bushing extending through the opening in said casingwall, a synthetic rubber gasket on said bushing between the fiangethereof and said casing end wall, said casing having the annular edgeportion at the open end thereof in sealed relation to said closure discand pressing said jack toward said casing end wall to compress saidgasket, thereby sealing the opening in said casing end wall.

4. A jack assembly as in claim 3, wherein said closure disc is formedwith openings through which said terminal means extends, an eyelet ineach opening and a solder seal between each eyelet and the terminalmeans passing therethrough for fixing the position of said jack relativeto said disc.

References Cited in the file of this patent UNITED STATES PATENTS1,696,865 Schellenger Dec. 25, 1928 1,710,884 Mackie Apr. 30, 19292,131,253 Langille Sept. 27, 1938 2,157,527 Clarke et al May 9, 19392,386,190 Betts Oct. 9, 1945 2,436,898 Rickmeyer Mar. 2, 1948 2,447,753Hellmann Aug. 24, 1948 2,469,336 Kohl May 3, 1949 2,500,632 Drake Mar.14, 1950

